revolving puddling furnace

Игры ⚽ Поможем написать реферат

steel — steellike, adj. /steel/, n. 1. any of various modified forms of iron, artificially produced, having a carbon content less than that of pig iron and more than that of wrought iron, and having qualities of hardness, elasticity, and strength varying … Universalium
Trip hammer — A trip hammer (alt. helve hammer) is a massive powered hammer, usually raised by a cam and then released to fall under the force of gravity. Historically, trip hammers were often powered by a water wheel, known to be used in China as long ago as… … Wikipedia

Словари и энциклопедии на Академике